<?php
// +----------------------------------------------------------------------
// | OneThink [ WE CAN DO IT JUST THINK IT ]
// +----------------------------------------------------------------------
// | Copyright (c) 2013 http://www.onethink.cn All rights reserved.
// +----------------------------------------------------------------------
// | Author: 麦当苗儿 <zuojiazi@vip.qq.com> <http://www.zjzit.cn>
// +----------------------------------------------------------------------

namespace Wap\Model;

use Think\Model;

/**
 * 分类模型
 */
class ChannelModel extends Model {

    /**
     * 获取导航列表，支持多级导航
     *
     * @param  boolean $field 要列出的字段
     *
     * @return array          导航树
     * @author 麦当苗儿 <zuojiazi@vip.qq.com>
     */
    public function lists($field = true) {
        $map = array( 'status' => 1 );
        $list = $this->field($field)->where($map)->order('sort')->select();

        return list_to_tree($list , 'id' , 'pid' , '_');
    }

}
